So how is this different from Eschaton? This tag editor supports adding, cloning, and deleting reflexives. The opening and rebuilding process is unparalleled and happens in under a few seconds for even the biggest of maps, as well. Also, it can convert Custom Edition maps to the HaloMD or Halo PC format. Lastly, you can rename your map's internal names.

It does use Eschaton plugins (Sparky's plugins by default), so if you want to tinker with those, right-click the program in Finder, Show Package Contents, Contents, Resources. You'll find the plugins folder as well as template.map (MD's bloodgulch.map).

Like any other tool, make sure to back your maps up before touching this program in case things go wrong.

A dependency swapper has been added. You can use this feature to quickly swap dependencies or go to tags by double clicking on them. This swapper will show nulled out references, but it will not show predicted resources.

Importing or duplicating a tag will automatically select the new tag.

Importing, deleting, duplicating a tag, and CE conversions no longer automatically scroll the tag list to the top, and the tag classes remain open.

Renaming a tag will correctly order the tag alphabetically.

Fixed a bug where renaming a tag would deadlock the application if a save dialog immediately appears.

Alpha build 12 has been released. It fixes an issue with importing tags into campaign maps where cutscenes would break as well as a bug where duplicating bitmaps and sounds tags wouldn't work properly.